Population justification: The global population has been estimated to number c.380,000 individuals (Wetlands International, 2006). Following the reclamation of the tidal flats at Saemanguem, c.90,000 non-breeding individuals disappeared from the area. Surveys elsewhere in South Korea confirmed they had not been displaced, and a decline of the same magnitude and timing in Australia suggests that individuals previously using Saemanguem have died (D. Rogers in litt. 2009). Therefore a global population of c.290,000 individuals is estimated, though given documented declines elsewhere the true figure is likely to be lower. National population estimates include: < c.10,000 individuals on migration and < c.1,000 wintering individuals in China; c.1,000-10,000 individuals on migration and < c.50 wintering individuals in Taiwan; c.50-10,000 individuals on migration in Japan and c.10,000-100,000 breeding pairs and > c.10,000 individuals on migration in Russia (Brazil 2009).

Trend justification: Reclamation of Saemangeum alone has caused a decline of c.90,000 individuals, equating to a population decline of approximately 25% since 2000 (N. Moores in litt. 2009; D. Rogers in litt. 2009). Furthermore there have been documented declines in some of the peripheral sites for the species in Australia and Japan (Amano 2006; R. Clemens in litt. 2010). Given that reclamation in the Yellow Sea is not restricted to Saemangeum and many more reclamation projects are proposed within the region, it is reasonable to assume that declines will continue in the future, hence a precautionary decline of 30-49% over 22 years (three generations) is estimated.

Country/Territory distribution

Country/Territory

Occurrence status

Presence

Breeding

Non-breeding

Passage

Resident

Australia

Native

Extant

Yes

Bahrain

Vagrant

Extant

Yes

Bangladesh

Native

Extant

Yes

Brunei

Native

Extant

Yes

China (mainland)

Native

Extant

Yes

Denmark

Vagrant

Extant

Djibouti

Vagrant

Extant

Germany

Vagrant

Extant

Guam (to USA)

Native

Extant

Yes

Hong Kong (China)

Native

Extant

Yes

India

Native

Extant

Yes

Indonesia

Native

Extant

Yes

Iran, Islamic Republic of

Native

Extant

Yes

Ireland

Vagrant

Extant

Israel

Vagrant

Extant

Japan

Native

Extant

Yes

Kuwait

Native

Extant

Yes

Malaysia

Native

Extant

Yes

Mauritius

Vagrant

Extant

Micronesia, Federated States of

Native

Extant

Yes

Morocco

Vagrant

Extant

Myanmar

Native

Extant

Yes

Netherlands

Vagrant

Extant

New Caledonia (to France)

Vagrant

Extant

New Zealand

Vagrant

Extant

North Korea

Native

Extant

Yes

Northern Mariana Islands (to USA)

Native

Extant

Yes

Norway

Vagrant

Extant

Oman

Native

Extant

Yes

Pakistan

Native

Extant

Yes

Palau

Native

Extant

Yes

Papua New Guinea

Native

Extant

Yes

Philippines

Native

Extant

Yes

Qatar

Vagrant

Extant

Russia (Asian)

Native

Extant

Yes

Saudi Arabia

Native

Extant

Yes

Seychelles

Vagrant

Extant

Singapore

Native

Extant

Yes

South Korea

Native

Extant

Yes

Spain

Vagrant

Extant

Sri Lanka

Native

Extant

Yes

Taiwan (China)

Native

Extant

Yes

Thailand

Native

Extant

Timor-Leste

Native

Extant

Yes

Yes

United Arab Emirates

Native

Extant

Yes

Yes

United Kingdom

Vagrant

Extant

USA

Vagrant

Extant

Vietnam

Native

Extant

Yes

Yemen

Vagrant

Extant

Yes

Important Bird Areas where this species has triggered the IBA criteria

Recommended citation
BirdLife International (2015) Species factsheet: Calidris tenuirostris. Downloaded from
http://www.birdlife.org on 03/03/2015.
Recommended citation for factsheets for more than one species: BirdLife International (2015) IUCN Red List for birds. Downloaded from
http://www.birdlife.org on 03/03/2015.

This information is based upon, and updates, the information published in BirdLife International (2000)
Threatened birds of the world. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife International, BirdLife International (2004)
Threatened birds of the world 2004 CD-ROM and BirdLife International (2008) Threatened birds of the world 2008 CD-ROM. These sources provide the information for species accounts for the birds on the IUCN Red List.

To provide new information to update this factsheet or to correct any errors, please email BirdLife